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If the furnace fails to heat up:
1. Check fire.
2. Check fan for operation.
3. Check that solenoid damper is open to allow air velocity.
4. Check water level of furnace.
5. Check for creosote blockage at chimney and bypass trough.
6. Check temperature setting.
7. Check for power at furnace.
If furnace water is hot, but buildings do not have heat:
1. Check pumps and check for closed valves.
2. Check filter or Y-Strainer for flow blockage.
3. Check for air in system at exchanger by bleeding off.
If furnace boils:
1. Check that door is closing properly and that door gasket is completely sealed.
2. Check that the ash pan door is properly closed and the gasket is completely sealed.
3. Check that the solenoid damper plate is opening and closing without hang-ups.
4. Check that the flexible air duct is connected to the blower and the bottom elbow of the furnace.
5. Check that the temperature settings are correct and water levels.
If furnace has shut down:
1. Check to ensure that the unit has power (does the outside light work).
2. Check the water temperature (furnace has a high temperature cut-out of 190 degrees F.).
3. If all the checks have not corrected the problem, have a qualified technician check the control panel.
Blower will not come on:
1. Check to see if the high limit switches may be shut off because of water temperature is higher then aquastat
setting.
2. Wait and allow water to cool down. Reset snap disc.
Abnormal creosote buildup in chimney and flue:
1. Check the moisture of your wood. Recommended measure content is 20%.
TROUBLESHOOTING